The materials we use are as follows

The welding steps are as follows

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

IC chips: https://www.utsource.net/category/ele...

Modules: https://www.utsource.net/Modules?sour...

Passive components: https://www.utsource.net/PassiveDevic...

Sensors: https://www.utsource.net/home/sensors...

LED lightings: https://www.utsource.net/category/led...